136261 has 2 divisors, whose sum is σ = 136262. Its totient is φ = 136260.

The previous prime is 136247. The next prime is 136273. The reversal of 136261 is 162631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136161 + 100 = 369^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 136261 - 2⁷ = 136133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68130 + 68131.

It is an arithmetic number, because the mean of its divisors is an integer number (68131).

2¹³⁶²⁶¹ is an apocalyptic number.

It is an amenable number.

136261 is a deficient number, since it is larger than the sum of its proper divisors (1).

136261 is an equidigital number, since it uses as much as digits as its factorization.

136261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 19.

The square root of 136261 is about 369.1354764853. The cubic root of 136261 is about 51.4585080702.

Adding to 136261 its reverse (162631), we get a palindrome (298892).

The spelling of 136261 in words is "one hundred thirty-six thousand, two hundred sixty-one".